JP3834714B2 - Waterproof stopper pushing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a waterproof plug pushing device.
[0002]
[Prior art]
In general, a connector is formed with a cavity for housing a metal terminal in a resin housing.
[0003]
Some such connectors are referred to as waterproof connectors. The waterproof connector has a rubber ring externally mounted on an electric wire connected to a terminal inserted into the cavity, and the gap between the cavity and the electric wire is sealed with the rubber ring, whereby the liquid in the cavity is sealed. The connection with the mating connector is achieved while maintaining the tightness.
[0004]
By the way, when the waterproof connector is a multipolar connector having a plurality of cavities, the terminals are not necessarily inserted into all the cavities, and the terminals may be inserted only into the predetermined cavities. In that case, if the cavity into which the terminal is not inserted is opened, foreign matter and water enter from here, and the function as the waterproof connector cannot be exhibited.
[0005]
In view of this, various waterproof plug pushing devices have been proposed in which sealing waterproof plugs are installed in cavities that are not used.
[0006]
For example, the applicant of the present application has proposed a rubber stopper mounting device previously patented (Japanese Patent No. 3109423). The main point is a rubber plug mounting tool used when a waterproof rubber plug is mounted in a predetermined cavity among a plurality of cavities formed in the housing of the waterproof connector, and holds the rubber plug The holding portion is positioned by a fitting portion that fits into the housing, and the rubber plug positioned by the rubber plug pressing mechanism provided in the fitting portion is inserted into the cavity.
[0007]
[Problems to be solved by the invention]
In the above prior art, the rubber plug is held by a predetermined rubber plug holding portion provided in the fitting portion in advance, and in this state, the connector housing is fitted into the fitting portion, so that the rubber plug to be attached Can be inserted into and mounted on the housing, so that the rubber plugs can be positioned collectively and the mounting operation can be performed at once.
[0008]
However, when attaching a rubber plug to the rubber plug holding portion, it is necessary for an operator to carefully attach the rubber plug one by one with a fingertip. This mounting operation was a process with poor workability due to the fact that the rubber plug was a small-diameter member.
[0009]
This invention is made | formed in view of the said malfunction, and makes it a subject to provide the waterproof plug pushing device which can improve workability | operativity at the time of attaching a waterproof plug to a connector dramatically.
[0010]
[Means for Solving the Problems]
The present invention for solving the above problems is a waterproof plug pushing device for mounting a waterproof plug for sealing a cavity of a connector to a mounting main part, which is formed in a cylindrical shape and has a waterproof plug inside. A loading unit for loading, and a pressurizing mechanism that is connected to the loading unit and that pushes the waterproof plug held in the loading unit from the proximal end side to the distal end side of the loading unit, are integrally provided. The part has an introduction hole for introducing the waterproof plug into the inside from the side, an internal space continuous with the introduction hole, and concentric with the internal space, and is introduced from the internal space by the pressurizing mechanism. A distal end side communication hole for holding the waterproof plug is formed, and the distal end side communication hole is set to be smaller in diameter than the internal space so as to be able to hold the loaded waterproof plug. It is a waterproof plug pushing device.
[0011]
In the present invention, the waterproof plug is held in the loading portion, and the pressurized waterproof mechanism is operated in a state where the tip side of the loading portion faces the main portion of the waterproof plug in advance, so that the held waterproof plug is attached to the loading portion. It can be easily mounted on the mounting main part by being pushed out from the proximal end side to the distal end side. Here, in the present invention, since the introduction hole for introducing the waterproof plug is provided in the side portion of the loading portion formed in the cylindrical shape, even if the waterproof plug is lying down and rolling, It is possible to easily load the waterproof plug into the loading portion simply by allowing the introduction hole to face the waterproof plug in the same posture and pushing in or scooping it into the interior. As a result, not only the mounting of the waterproof plug to the main mounting portion but also the loading operation to the loading portion becomes very easy, and the workability is improved. In particular, the distal end side communication hole is set to be slightly smaller in diameter than the internal space communicating with the introduction hole, so that the loaded rubber stopper can be held with a necessary and sufficient resistance.
[0012]
In the present invention, the “waterproof plug” is mainly a rubber plug, but is not necessarily made of a rubber material. The “waterproof plug mounting essential part” may be a connector cavity, or may be a waterproof plug holding part provided in a mounting tool for mounting a waterproof plug in a plurality of cavities at the same time.
[0013]
The loading portion is preferably a waterproof plug pushing device in which a pair of parallel chamfered portions are formed on the outer surface of the tip.
[0014]
According to this aspect, since the chamfered portion can prevent the other mounting essential part and the tip of the loading part from interfering even when the mounting essential part is arranged at a narrow interval, more efficiently, In addition, the waterproof plug can be accurately attached to the connector.
[0015]
Moreover, it is preferable that the tip of the loading portion is a waterproof plug pushing device characterized in that it has a positioning projection corresponding to the undulation of the mounting essential portion.
[0016]
According to this aspect, when attaching the waterproof plug to the connector, the loading portion can be positioned on the mounting main portion with the protrusion at the tip of the loading portion, so that the position of the loading portion tip with respect to the mounting main portion is stabilized, A waterproof plug can be accurately attached to the connector.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0018]
FIG. 1 is a perspective view showing a schematic configuration of a waterproof connector 10 according to the present embodiment.
[0019]
Referring to the figure, the illustrated waterproof connector 10 according to the present embodiment has a resin housing 11 formed with a cavity 12 for receiving a metal terminal (not shown), and a part thereof (shown in the figure). The mounting main part indicated by reference numeral 12a) is designed to be fitted with a sealing rubber plug 13 (a kind of waterproof plug).
[0020]
The rubber plug 13 is a molded product of rubber having an appropriate elasticity that matches the inner diameter of the cavity 12. In this embodiment, the rubber plug 13 has three crests to ensure the waterproofing of the cavity 12. The cavity 12 is waterproofed by stopping water between the entire circumference of the top portion 13a of the first portion 13a and the mounting main portion 12a of the cavity 12.
[0021]
The waterproof plug pushing device according to this embodiment is used to mount the rubber plug 13 for sealing on the mounting main part 12 a of the cavity 12.
[0022]
FIG. 2 is a perspective view showing a schematic configuration of the waterproof plug pushing device according to the present embodiment. FIG. 3 is a diagram showing a schematic configuration of the waterproof plug pushing device according to the present embodiment. (A) is the longitudinal cross-sectional view of a waterproof plug pushing device, (B) is the figure which looked at the loading part 21 mentioned later from the bottom.
[0023]
Referring to these drawings, the illustrated waterproof plug pushing device 20 is for mounting the above-described rubber plug 13 (see FIG. 1) to the mounting main portion 12a, and the rubber plug 13 is loaded. The loading portion 21 and the pressurizing mechanism 22 for sending out the rubber plug 13 loaded in the loading portion 21 are integrally provided.
[0024]
The loading portion 21 is a cylindrical metal member as a whole, and a substantially oval introduction hole 21a is formed on one outer peripheral portion thereof. The introduction hole 21a is for introducing the rubber plug 13 into the inside of the loading portion 21. As will be described later, the rubber plug 13 is introduced from the outer side thereof and is filled concentrically with the loading portion 21. It is set to specifications suitable for. Inside the loading portion 21, an internal space S that is continuous with the introduction hole 21 a, and a distal end side communication hole 21 b and a proximal end side communication hole 21 c that are concentric with the internal space S are formed.
[0025]
The front end side communication hole 21b is for loading the rubber plug 13 introduced into the internal space S through the introduction hole 21a and for sending it out from the front end opening portion. The proximal end side communication hole 21c is for introducing a push rod 23 of the pressurizing mechanism 22 described later from the inner space S into the distal end side communication hole 21b and feeding the loaded rubber plug 13. is there. In the illustrated embodiment, the distal end side communication hole 21b is set to be slightly smaller in diameter than the internal space S communicating with the introduction hole 21a, thereby holding the loaded rubber plug 13 with a necessary and sufficient resistance. To be able to.
[0026]
Even when the sleeves of the cavities 12 constituting the mounting main portion 12a (see FIG. 1) are densely packed, the leading end portion of the loading portion 21 is chamfered in parallel with each other to prevent interference with adjacent sleeves. A pair of chamfered portions 21d and a pair of protrusions 21e projecting further toward the distal end side than the respective chamfered portions 21d are connected. In the illustrated example, ribs 12b (see FIG. 6) are formed on the outer periphery of the sleeve of the cavity 12 that constitutes the mounting essential portion 12a. Therefore, each protrusion 21e avoids interference with the ribs 12b. A notch 21f is formed.
[0027]
Next, the pressurizing mechanism 22 includes a rod case 26 connected to the loading unit 21, a push rod 23 slidably disposed inside the rod case 26, and an operation for operating the push rod 23. Part 25.
[0028]
The rod case 26 is made of metal or preferably a transparent resin product, and is integrated with the loading unit 21 concentrically by press-fitting a proximal end portion of the loading unit 21 into one end thereof. Inside the rod case 26, there are a mounting hole 26a for fitting the loading portion 21 from the front end side, a rod insertion hole 26b continuous with the mounting hole 26a, and an accommodation hole 26c continuous with the rod insertion hole 26b. It is formed concentrically. Then, the loading portion 21 is press-fitted and integrated into the mounting hole 26a, the push rod 23 is inserted into the rod insertion hole 26b, and the other end of the push rod 23 (the end opposite to the load portion 21) is operated. A portion 25 is provided, and each component part is assembled to the rod case 26.
[0029]
The push rod 23 is a cylindrical metal bar having the same diameter as the inner diameter of the leading end side communication hole 21b of the loading portion 21, and as shown in FIGS. 2 and 3, the inner space (internal space of the loading portion 21). S) completely retracted from S), a loading posture in which the rubber plug 13 is loaded into the leading end side communication hole 21b of the loading portion 21, and a sending posture in which the rubber plug 13 is sent out from the leading end side communication hole 21b. Can be taken. A guide rod 24 is concentrically connected to the other end of the push rod 23.
[0030]
The guide rod 24 is a cylindrical metal bar having a slightly larger diameter than the push rod 23 and is slidably accommodated in the rod insertion hole 26b. An operation unit 25 is concentrically connected to the other end of the guide rod 24. The guide rod 24 is formed with a regulation groove 28 whose advancement / retraction is regulated by a regulation part 27 embodied by a screw, and the regulation groove 28 is fitted in the regulation part 27 so as to be freely advanced / retracted. The guide rod 24 can take the push rod 23 in the three positions described above.
[0031]
The operation portion 25 is a cylindrical metal member having a diameter larger than that of the guide rod 24, and one end side portion of the operation portion 25 slidably enters the accommodation hole 26c of the rod case 26, and the other end side is a rod. Projecting to the outside of the case 26. The other end is provided with a pressing end 25a for the operator to press with his thumb.
[0032]
A pair of urging members 30 and 31 disposed on the outer periphery of the guide rod 24 via a spring seat 29 are interposed between the operation portion 25 and the accommodation hole 26c.
[0033]
The spring seat 29 is a boss-like member that is slidably fitted to the outer periphery of the guide rod 24, and has a flange portion 29a that is slidably in contact with the inner peripheral surface of the accommodation hole 26c. Yes.
[0034]
Each of the urging members 30 and 31 is embodied by a coil spring, and is disposed between the operation portion 25 and the accommodation hole 26c via the spring seat 29, thereby allowing one end of the restriction groove 28 to be formed. The operation portion 25 is urged toward the other end side in cooperation with the position where the portion is restricted by the restriction portion 27. For this reason, when both the urging members 30 and 31 are in a free state, the push rod 23 is displaced to the other end side via the operation portion 25 and takes a retracted posture as shown.
[0035]
Here, in the biasing members 30 and 31 according to the illustrated embodiment, the spring coefficient of one (for example, the biasing member 30) is set higher than the spring coefficient of the other (for example, the biasing member 31). Then, when the pushing load for compressing only the biasing member 31 having a small spring coefficient acts on the operation portion 25, the pushing rod 23 is displaced from the retracted posture to the loading posture, and both the biasing members 30, 31 are compressed. The pushing rod 23 can be displaced to the delivery posture by acting on the operation portion 25. As a result, the operator feels two large and small reaction forces at the pressing end 25a of the operation unit 25, so that the rubber plug 13 is loaded into the distal end side communication hole 21b of the loading unit 21 and the distal end side communication hole of the loading unit 21 is loaded. It is possible to recognize the difference in both states from the pushing of the rubber plug 13 into the mounting main part 12a from 21b by the difference in reaction force transmitted to the thumb.
[0036]
Next, the operation of the present embodiment will be described with reference to FIGS.
[0037]
FIG. 4 is a perspective view showing an operation of loading the rubber plug 13 into the waterproof plug pushing device 20 according to the present embodiment, and FIG. 5 is a diagram showing a rubber plug from the waterproof plug pushing device 20 according to the present embodiment to the waterproof connector 10. 13 is a perspective view showing an operation of mounting 13. FIG. 6 is a perspective view showing an operation for positioning the loading portion 21 of the waterproof plug pushing device 20 according to the present embodiment on the mounting main portion 12a.
[0038]
With reference to FIG. 4, in the present embodiment, the rubber plug 13 is first introduced into the internal space S of the loading unit 21 by facing the introduction hole 21 a and pushing the rubber plug 13 into the loading unit 21. In addition, when the rubber plug 13 is lying down and rolling, the introduction hole 21 a faces the rubber plug 13 in the same posture and is scooped into the loading section 21, so that the inside of the loading section 21. A rubber plug 13 is introduced into the space S.
[0039]
Next, the rod case 26 is gripped, and the operating portion 25 is lightly pushed with the thumb, whereby the push rod 23 in the retracted position is displaced to the loading position, and the rubber plug 13 introduced into the internal space S is connected to the distal end side communication hole. It is loaded into 21b. At this time, when the operator tries to push in the operation unit 25 from the loading posture to the stroke to shift to the delivery posture, the reaction force by the biasing members 30 and 31 changes at the switching portion, so the operation unit 25 is pushed in excessively. Thus, the operator does not make a mistake that the waterproof plug 13 to be loaded is sent out.
[0040]
Next, referring to FIG. 5, in order to attach the rubber plug 13 (FIG. 1) to the waterproof connector 10 from the waterproof plug push-in device 20, the protrusion 21e of the loading portion 21 faces the mounting main portion 12a of the rubber plug 13. However, as shown in FIG. 6, the rib 12 b of the mounting main part 12 a is introduced into the notch 21 f at the tip of the loading part 21 to determine the position of the loading part 21.
[0041]
In this state, by pushing the operating portion 25, the push rod 23 is displaced from the retracted posture to the delivery posture through the loading posture, and the rubber plug 13 loaded in the distal end side communication hole 21b is positioned. It is mounted in the main part 12a.
[0042]
As described above, in this embodiment, the pressure stopper 22 is operated in a state where the rubber plug 13 is held in the loading portion 21 and the leading end side of the loading portion 21 faces the mounting main portion 12a of the rubber plug 13 in advance. As a result, the held rubber stopper 13 can be pushed out from the internal space S of the loading portion 21 to the leading end side communication hole 21b and easily attached to the attachment main portion 12a.
[0043]
Moreover, in this embodiment, since the introduction hole 21a for introducing the rubber plug 13 is provided in the side part of the loading part 21 formed in a cylindrical shape, the rubber plug 13 is lying sideways and rolled. Even so, it is possible to easily load the rubber plug 13 into the loading portion 21 simply by allowing the introduction hole 21a to face the rubber plug 13 in the same posture and pushing or scooping it into the inside. As a result, not only the mounting of the rubber plug 13 to the mounting main part 12a but also the loading operation to the loading unit 21 becomes very easy, and the workability is improved.
[0044]
The above-described embodiments are merely examples of preferred specific examples of the present invention, and the present invention is not limited to the above-described embodiments.
[0045]
For example, in the present embodiment, the “waterproof plug” is mainly a rubber plug, but is not necessarily made of a rubber material. Other resin molded products may be used as long as they match the inner diameter of the cavity 12 and have an appropriate elasticity. Moreover, it is not always necessary to have three crests, and various designs are possible for the shape of the rubber plug 13 such as a cylindrical one.
[0046]
In addition, the “waterproof plug installation essential part” may be a cavity of a general connector other than a waterproof connector, and a waterproof plug provided in a mounting tool for mounting a waterproof plug in a plurality of cavities at the same time. Part.
[0047]
The loading portion 21 is not necessarily a metal member, and a resin molded product can be used as long as it has sufficient strength.
[0048]
The pressurizing mechanism 22 does not necessarily have the configuration described above, and is integrally connected to the loading unit 21, and the rubber plug 13 held in the loading unit 21 is connected to the internal space S of the loading unit 21. Various designs are possible as long as it is configured to be pushed out to the tip side communication hole 21b.
[0049]
In addition, it goes without saying that various design changes are possible within the scope of the claims of the present invention.
[0050]
【The invention's effect】
As described above, according to the present invention, not only the waterproof plug mounting operation but also the waterproof plug loading operation is improved in workability, so that a remarkable effect is achieved in that productivity is dramatically improved.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a schematic configuration of a waterproof connector according to an embodiment.
FIG. 2 is a perspective view showing a schematic configuration of a waterproof plug pushing device according to the present embodiment.
FIG. 3 is a diagram showing a schematic configuration of a waterproof plug pushing device according to the present embodiment. (A) is the longitudinal cross-sectional view of a waterproof plug pushing device, (B) is the figure which looked at the loading part mentioned later from the bottom.
FIG. 4 is a perspective view showing an operation of loading a waterproof plug into the waterproof plug pushing device according to the present embodiment.
FIG. 5 is a perspective view showing an operation of attaching the waterproof plug to the waterproof connector from the waterproof plug pushing device according to the present embodiment.
FIG. 6 is a perspective view showing an operation for positioning the loading portion of the waterproof plug pushing device according to the present embodiment at the main portion of the attachment.
[Explanation of symbols]
10 Waterproof connector 12 Cavity 12a Mounting essential part 12b Rib (undulation)
13 Rubber stopper (a kind of waterproof stopper)
20 waterproof plug pushing device 21 the loading unit 21a introduction hole 21 c proximal side communicating hole 21 b distal side communicating hole 21d chamfer 22 pressure mechanism

Claims (3)

A waterproof plug push-in device for mounting a waterproof plug for sealing a cavity of a connector on a mounting main part,
A loading portion that is formed in a cylindrical shape and is loaded with a waterproof plug;
A pressure mechanism that is connected to the loading unit and that pushes out the waterproof plug held in the loading unit from the proximal end side to the distal end side of the loading unit;
The loading portion has an introduction hole for introducing the waterproof plug into the inside from the side, an internal space continuous with the introduction hole, and concentric with the internal space. The tip side communication hole that holds the waterproof plug introduced from is formed,
The waterproof plug push-in device, wherein the distal end side communication hole is set to have a smaller diameter than the internal space so as to hold a loaded waterproof plug.   The waterproof plug pushing device according to claim 1, wherein a pair of parallel chamfered portions are formed on an outer surface of the loading portion.   2. The waterproof plug pushing device according to claim 1, wherein a tip of the loading portion has a positioning projection corresponding to the undulation of the main portion.

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